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J/A+A/597/A27 NGC 6302 CO emission SHAPE model (Santander-Garcia+, 2017)
ALMA high-spatial resolution observations of the dense molecular region of
NGC 6302.
Santander-Garcia M., Bujarrabal V., Alcolea J., Castro-Carrizo A.,
Sanchez Contreras C., Quintana-Lacaci G., Corradi R.L.M., Neri R.
<Astron. Astrophys. 597, A27 (2017)>
=2017A&A...597A..27S (SIMBAD/NED BibCode)
ADC_Keywords: Models ; Planetary nebulae
Keywords: interstellar medium: kinematics and dynamics -
planetary nebulae: general - planetary nebulae: individual: NGC 6302 -
physical data and processes: radiative transfer
Abstract:
The mechanism behind the shaping of bipolar planetary nebulae is still
poorly understood. It is becoming increasingly clear that the main
agents must operate at their innermost regions, where a significant
equatorial density enhancement should be present and related to the
collimation of light and jet launching from the central star
preferentially towards the polar directions. Most of the material in
this equatorial condensation must be lost during the asymptotic giant
branch as stellar wind and later released from the surface of dust
grains to the gas phase in molecular form. Accurately tracing the
molecule-rich regions of these objects can give valuable insight into
the ejection mechanisms themselves.
We investigate the physical conditions, structure and velocity field
of the dense molecular region of the planetary nebula NGC 6302 by
means of ALMA band 7 interferometric maps.
The high spatial resolution of the 12CO and 13CO J=3-2 ALMA data
allows for an analysis of the geometry of the ejecta in unprecedented
detail. We built a spatio-kinematical model of the molecular region
with the software SHAPE and performed detailed non-LTE calculations of
excitation and radiative transfer with the shapemol plug-in.
Description:
SHAPE model of the 12CO and 13CO J=3-2 emission of the planetary
nebula NGC 6302, to be matched to ALMA observations as described in
the paper. The file is intended to be loaded with SHAPE v5
(http://www.astrosen.unam.mx/shape/) and makes use of the SHAPEMOL
plugin to achieve the radiative transfer in CO species (i.e. The CO
data tables in
http://www.astrosen.unam.mx/shape/v5/Downloads/SHAPE_INSTALLERS/index.
html must be downloaded and pointed at within SHAPE). For additional
details on how to work with SHAPE+SHAPEMOL, see Santander-Garcia et
al. (2015, Cat. J/A+A/573/A56).
Objects:
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RA (2000) DE Designation(s)
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17 13 44.34 -37 06 11.0 NGC 6302 = PN G349.5+01.0
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File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file
ngc6302almamodel.shp 512 1222 SHAPE model of the 12CO and 13CO J=3-2
emission of the planetary nebula NGC 6302
See also:
J/A+A/573/A56 : SHAPEMOL code (Santander-Garcia+, 2015)
Acknowledgements:
Miguel Santander-Garcia, m.santander(at)oan.es
(End) Patricia Vannier [CDS] 24-Aug-2016